:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-border: #dde1e6;
    --color-text: #1f2430;
    --color-muted: #6b7280;
    --color-primary: #2454ff;
    --color-primary-dark: #1a3fcc;
    --color-danger: #d63b3b;
    --radius: 6px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.impersonate-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: #fff3cd;
    color: #7a5c00;
    padding: 8px 24px;
    font-size: 0.88rem;
    border-bottom: 1px solid #f0d78c;
}
.impersonate-banner form { margin: 0; }
.impersonate-banner button {
    background: #7a5c00;
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 6px 12px;
    font-size: 0.85rem;
    cursor: pointer;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border-radius: var(--radius);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
}
.icon-btn:hover { background: var(--color-bg); }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn-row { display: flex; gap: 6px; }

.status-dot { display: inline-block; width: 13px; height: 13px; border-radius: 50%; vertical-align: middle; }
.status-dot-ok { background: #4ade80; }
.status-dot-off { background: #9ca3af; }
.status-dot-warn { background: #b45309; }
.status-icon { display: inline-flex; vertical-align: middle; }
tr.row-inactive td { color: #b0b5bd; }

.app-shell { display: flex; min-height: 100vh; align-items: stretch; }

.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}
.sidebar-top { padding: 20px 16px 8px; }
.tenant-logo { max-width: 100%; max-height: 60px; display: block; }
.tenant-logo-placeholder {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text);
    padding: 8px 0;
}
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 12px 10px; }
.sidebar-nav a {
    display: block;
    padding: 9px 12px;
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 0.92rem;
}
.sidebar-nav a:hover { background: var(--color-bg); text-decoration: none; }
.sidebar-nav a.active { background: var(--color-primary); color: #fff; }
.sidebar-bottom { padding: 16px; border-top: 1px solid var(--color-border); }
.brand-wordmark { font-weight: 700; letter-spacing: 0.02em; color: var(--color-muted); font-size: 0.95rem; }

.main-area { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar-v2 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 24px;
}
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 0.88rem; color: var(--color-muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:last-child { color: var(--color-text); font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 14px; }

.dropdown { position: relative; }
.dropdown summary {
    list-style: none;
    cursor: pointer;
    font-size: 0.9rem;
    padding: 6px 10px;
    border-radius: var(--radius);
    color: var(--color-text);
}
.dropdown summary::-webkit-details-marker { display: none; }
.dropdown summary:hover { background: var(--color-bg); }
.dropdown[open] summary { background: var(--color-bg); }
.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    min-width: 180px;
    z-index: 20;
    padding: 6px;
}
.dropdown-menu a, .dropdown-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 10px;
    border-radius: var(--radius);
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 0.88rem;
    cursor: pointer;
}
.dropdown-menu a:hover, .dropdown-menu button:hover:not(:disabled) { background: var(--color-bg); text-decoration: none; }
.dropdown-menu button:disabled { color: var(--color-primary); font-weight: 600; cursor: default; }
.dropdown-menu form { margin: 0; }

.year-form select { padding: 6px 8px; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: 0.88rem; }

.main-area .content { max-width: none; margin: 24px; padding: 0; }
.content { max-width: 1000px; margin: 32px auto; padding: 0 24px; }

h1 { font-size: 1.4rem; margin-bottom: 20px; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.auth-box { max-width: 360px; margin: 80px auto 0; }
.auth-box .card { padding: 32px; }

form label {
    display: block;
    margin-bottom: 14px;
    font-size: 0.9rem;
    color: var(--color-muted);
}
form input[type="text"],
form input[type="email"],
form input[type="password"],
form input[type="number"],
form select,
form textarea {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 9px 11px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-surface);
}
form input[type="checkbox"] { margin-right: 6px; }

button, .btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 9px 16px;
    font-size: 0.95rem;
    cursor: pointer;
}
button:hover, .btn:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn-secondary { background: var(--color-muted); }
.btn-danger { background: var(--color-danger); }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }

table { width: 100%; border-collapse: collapse; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--color-border); font-size: 0.92rem; }
th { background: #fafbfc; color: var(--color-muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
td.actions { text-align: right; white-space: nowrap; }
td.actions a, td.actions button { margin-left: 8px; font-size: 0.85rem; }

.error { background: #fdecec; color: var(--color-danger); border: 1px solid #f5c2c2; border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; font-size: 0.9rem; }
.muted { color: var(--color-muted); }
.empty-state { color: var(--color-muted); padding: 24px; text-align: center; }